#615FCB
Closest named color: Dark Periwinkle (#665FD1). oklch(54.4% 0.163 280.3), rgb(97, 95, 203).
Aa
White text reads best on this color (5.24:1).
About this color
#615FCB is a medium-dark, vivid purple. In OKLCH its lightness is 54%, its chroma 0.163 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.012 away. White text reads best on it, at 5.24:1.
| Hue family | Purples |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.163) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.00:1 |
| White text | 5.24:1 |
Values
| HEX | #615FCB |
| RGB | rgb(97, 95, 203) |
| HSL | hsl(241, 51%, 58%) |
| OKLCH | oklch(54.4% 0.163 280.3) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #615FCB | 5.24:1 | AA | Lc -81.1 | Fine for body text |
| Black text on #615FCB | 4.00:1 | AA large text | Lc 28.3 | Dividers and decoration only |
| #615FCB text on white | 5.24:1 | AA | Lc 75.7 | Fine for body text |
| #615FCB text on black | 4.00:1 | AA large text | Lc -26.0 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 600.
-
Step 50
50
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E7E9F8
oklch(93.7% 0.02 279.9)
-
Step 200
200
#D3D7F4
oklch(88.5% 0.04 279.3)
-
Step 300
300
#B7BCF0
oklch(80.9% 0.073 280.3)
-
Step 400
400
#9398E8
oklch(70.8% 0.116 280.2)
-
Step 500
500
#7A7CE1
oklch(63.1% 0.149 280.4)
-
Step 600
600 (this color)
#615FCB
oklch(54.4% 0.163 280.3)
-
Step 700
700
#5351B3
oklch(49% 0.151 280.2)
-
Step 800
800
#444391
oklch(42.7% 0.125 280.3)
-
Step 900
900
#393974
oklch(37.7% 0.099 280.6)
-
Step 950
950
#212244
oklch(27% 0.062 280.1)
#615FCB with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #2270CF | 0.069 |
| Deuteranopia (no green cones) | #1268C9 | 0.073 |
| Tritanopia (no blue cones) | #34778C | 0.140 |
| Achromatopsia (no color) | #6C6C6C | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #615FCB
#615FCB
oklch(54.4% 0.163 280.3)
- #7F7100
#7F7100
oklch(54.5% 0.114 100.8)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #615FCB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.012
- Slate Blue #6A5ACD ΔE 0.017
- Iris #6258C4 ΔE 0.019
- Light Indigo #6D5ACF ΔE 0.022
- Warm Blue #4B57DB ΔE 0.046
- Royal Blue #4169E1 ΔE 0.052
- Neon Blue #4361EE ΔE 0.064
- Bluey Purple #6241C7 ΔE 0.067
Use #615FCB in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.